Elegant calligraphic inscription of the name “Martina”, written in luxury cursive style, color diamond silver with crystal-like reflections in cold tones (white, silver, icy gray). The text should appear shiny and faceted like a real diamond surface, with a realistic 3D metallic effect, standing facing the viewer. Put a white background, creating contrast and reflections that highlight the brilliance of the diamond text. No decorations or shadows outside the name. Ultra-realistic lighting, premium aesthetic, cinematic mood, 8K render..